Give Now

A Moment of Science

Almost Identical Twins

Though it’s true that identical twins have the same DNA, that doesn’t mean that there’s no way to tell them apart. First of all, identical twins do not have identical fingerprints.

This is because fingerprints aren’t determined only by your genes. Identical twins normally have very similar fingerprints, but pressure in the womb and contact with amniotic fluid can influence the ridges along fingerprint patterns.

Basically, even though identical twins have the same genes, the environment can cause small differences in appearance.

Stay Connected

What is RSS? RSS makes it possible to subscribe to a website's updates instead of visiting it by delivering new posts to your RSS reader automatically. Choose to receive some or all of the updates from A Moment of Science:

Support for Indiana Public Media Comes From

About A Moment of Science

Search A Moment of Science